Bump Microsoft.AspNetCore.OpenApi from 7.0.4 to 7.0.20

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.OpenApi
  dependency-version: 7.0.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

albums-api/albums-api.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.4" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.20" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
     <PackageReference Include="Microsoft.Data.SqlClient" Version="3.1.5" />
   </ItemGroup>